code: def testPickleOfPartitionSpecs(self, partition_spec):
      restored_partition_spec = pickle.loads(
          pickle.dumps(partition_spec)
      )
      self.assertIsInstance(
          restored_partition_spec, jax.sharding.PartitionSpec
      )
      self.assertTupleEqual(partition_spec, restored_partition_spec)
  
imports: import pickle
  import unittest
  from absl.testing import absltest
  from absl.testing import parameterized
  import jax
  from jax import numpy
  from jax import config
  from jax.interpreters import pxla
  from jax._src import test_util
  from jax._src.lib import xla_client
  import numpy
label_desc: Use image node_id 4 for calling the PickleTest obj's underlying member method code with example usage: obj.testPickleOfPartitionSpecs(partition_spec) without return types